Resolving Error Code 0x80070490: Fixing File Installation Issues on Windows 8

Here are several methods to resolve the error code 0x80070490 in Windows 8:

1. Run the Windows Update Troubleshooter: Navigate to Control Panel > Troubleshooting > System and Security > Windows Update > Run the troubleshooter.
2. Check for corrupted system files: Open Command Prompt with administrator privileges, type 'sfc /scannow', and press Enter. This will scan and repair any corrupted system files.
3. Reset Windows Update components: Open Command Prompt as an administrator and enter the following commands one by one:

    net stop wuauserv
    net stop cryptSvc
    net stop bits
    net stop msiserver
    ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
    ren C:\Windows\System32\catroot2 catroot2.old
    net start wuauserv
    net start cryptSvc
    net start bits
    net start msiserver

4. Perform a clean boot: Press the Windows key + R, type 'msconfig', and press Enter. In the Services tab, check 'Hide all Microsoft services'. Click 'Disable all', then go to the Startup tab and click 'Open Task Manager'. Disable all startup items and restart your computer.
5. Perform a system restore: Navigate to Control Panel > System and Security > System > System Protection > System Restore. Select a restore point before the error occurred and follow the prompts to restore your system.

If none of these solutions work, you might need to reinstall Windows 8.